And if a cohorteffect were responsible, the U-bend would not show up consistently in 40 years' worth of data.
如果人群差异因素成立的话,连续40年的数据就不可能始终呈现马蹄形趋势。
2
This may reflect a "cohorteffect", the notion that a person's lifelong voting habits are established early on.
上述的行为可以叫做C效应,即一个人一生的投票习惯受早期影响。
3
The cohort studies and genetic studies yielded similar results, indicating a protective effect from lower homocysteine levels, even though they did not share the same sources of possible error.